Yet another story about the behemoth Wal-Mart doing good stuff. This makes my brain feel confused. From The New York Times:

In the United States, Wal-Mart will double the percentage of locally grown produce, to 9 percent, the company said. Wal-Mart defines local produce as that grown and sold in the same state. Still, the program is far less ambitious than in some other countries — in Canada, for instance, where Wal-Mart expects to buy 30 percent of produce locally by the end of 2013, and, when local produce is available, increase that to 100 percent....

As it did in the environmental arena, it will begin creating an agriculture-specific index to figure out how to measure waste and efficiency among produce suppliers. It will be asking its biggest producers to answer questions about water, fertilizer and chemical use. The eventual goal is to include that information in a sustainability rating that customers would see, so they could decide whether to choose one avocado over another based on how much waste it had created. Wal-Mart would also use the information when it decides from whom to buy.